India, June 9 -- Southwest Airlines Co. (LUV) announced late Monday its interline partnership with Singapore Airlines Ltd. (C6L.SI) to offer worldwide travelers single-ticket journeys to and from the United States.

During the International Air Transport Association or IATA Annual General Meeting in Brazil, the company said the deal connects to places where Southwest and Singapore Airlines fly.

The SIA Group, which includes Singapore Airlines and Scoot, operates service to more than 130 destinations in 35 countries and territories. It flies between its global hub, Singapore Changi Airport and three airports in the U.S. served by Southwest. These include Los Angeles, Seattle/Tacoma, and San Francisco.

In these shared gateway airports, inte...